The Quarrel over Images

An accusation of idolatry

The iconoclast argument starts from a real biblical text: the Decalogue forbids making an idol in order to bow down before it. The opponents of images applied this ban to icons, mosaics, frescoes and the gestures of veneration accompanying them.^[7][8]

The strength of the objection comes from its apparent simplicity. If God forbids images, why do Christians cense icons, kiss them, light lamps before them? The iconoclast answers: because popular piety has slipped into idolatry. The defenders of images answer: because the iconoclast confuses idol with icon.

This distinction would prove decisive. The Church does not deny the ban on idols; it denies that every religious image is an idol. The Old Testament itself knows liturgical images commanded by God, notably the cherubim placed upon the Ark of the Covenant and the figures of the Temple.^[9][10]

A political crisis as much as a theological one

The quarrel was born in a Byzantine Empire shaken by military defeats, Muslim pressure, court rivalries and the imperial will to control the Church more tightly. New Advent places Leo III the Isaurian's first measures around 726-730; Constantine V, his son, then turned the iconoclast policy into a doctrinal and disciplinary programme.^[11]

Several factors intersected. Emperors sought the religious unity of the Empire; some bishops supported the iconoclast reform; the monks, great guardians of icons and relics, became visible opponents of power. Iconoclasm was therefore not merely an opinion: it became a policy of State, with confiscations, exiles, public humiliations and the destruction of images.^[12]

The influence of Judaism and Islam

Byzantine sources and later narratives sometimes attribute iconoclasm to Jewish or Muslim influences. The formulation calls for caution: an internal Christian crisis must not be reduced to a single external cause. But context matters. The Byzantine Empire lived face to face with a conquering Islam, strongly hostile to figurative religious imagery in worship, and some emperors may have seen in the suppression of images a return to a biblical purity capable of explaining or warding off defeats.^[13]

Nicaea II would turn this argument around. If Christ is only a prophet, or if God never became visible, then the image is indeed suspect. But if the Word became flesh, the question changes: the image of Christ does not claim to depict the invisible divine nature; it depicts the incarnate Word according to his visible humanity.

"The Word became flesh and dwelt among us." — Jn 1:14^[14]

Leo III and the first iconoclast shock

Leo III reigned from 717 to 741. The first measures against images are traditionally placed around 726, hardening towards 730. The scene that became emblematic is the removal of the image of Christ placed over the Chalke Gate at Constantinople, an act signalling that the quarrel touched the symbolic heart of the capital.^[15]

Rome reacted negatively. Popes Gregory II and then Gregory III refused to accept that the emperor should decide alone a question touching liturgical tradition and the faith. The break was not yet the schism of 1054, but it revealed a lasting divergence: the imperial East ill tolerated a Church resisting the religious policy of the basileus; Rome refused to let civil power abolish a received practice.^[16]

Constantine V and the synod of Hieria

Under Constantine V (741-775), iconoclasm became more systematic. In 754, the emperor convened the synod of Hieria, which condemned images and presented itself as an ecumenical council. The problem was twofold: doctrinal, because the synod rejected an ancient ecclesial tradition; ecclesiological, because it claimed to speak for the universal Church without Rome and without the Eastern patriarchates, which were prevented from attending.^[17][18]

Hieria concentrated the iconoclast argument: depicting Christ would mean either separating his humanity from his divinity, or enclosing his divinity within a visible form. The defenders of images would answer that the icon does not paint the Godhead as such; it depicts the person of the incarnate Word according to the flesh he truly assumed.^[19]

Persecutions, destructions and polemical memory

The crisis took concrete form: images destroyed, frescoes covered over, relics displaced, monks exiled or mistreated, communities divided. Iconophile sources stress the violence of imperial power; modern historians debate the exact scale of the destructions from region to region, but the central fact remains solid: iconoclasm was a coercive policy, not merely a debate of books.^[20]

The Chludov Psalter (Moscow, State Historical Museum, ms. D.129), a marginally illuminated psalter of the mid-9th century, offers a theological interpretation of this violence.^[21] By likening the iconoclasts to the soldiers who outrage Christ, it says that attacking the image of Christ amounts symbolically to refusing the visibility of Christ himself. The formula is polemical; yet it reveals the heart of the conflict.

John Damascene: the Incarnation changes the status of the image

Saint John Damascene (c. 675-749) is the great theological voice of the first iconoclast period. Living under Muslim rule, beyond the direct reach of the Byzantine emperor, he could write freely against iconoclasm. His Discourses against those who reject holy images give the classic formula of the iconophile defence.^[22]

"I do not worship matter, I worship the God of matter, who became matter for my sake…" — Saint John Damascene, On Holy Images^[23]

The argument is Christological. Before the Incarnation, the invisible God cannot be depicted. After the Incarnation, the eternal Son has a human face, a visible history, a body that can be seen, touched, crucified and raised. The Christian image does not capture God; it confesses that God made himself visible.

The image points to the prototype

The second argument is relational: an image is not honoured for itself, as though wood, paint or mosaic possessed a divinity. It is honoured because it points to the person depicted. This is the logic of the prototype: honour passes through the image.

Nicaea II would formulate this rule in a phrase that became classic:

"The honour paid to the image ascends to the prototype." — Nicaea II, dogmatic definition^[24]

This phrase closes off two opposite errors. It condemns idolatry, because the image is not God. It also condemns iconoclasm, because an image can bear a relative honour without usurping divine adoration.

Veneration and adoration: the decisive distinction

The quarrel compelled the Church to clarify its words. In Greek, Nicaea II distinguishes respectful veneration or prostration (proskynesis) from properly divine adoration (latreia). Adoration belongs to God alone; veneration may be given to images insofar as they depict Christ, Mary, the angels or the saints.^[25]

This distinction remains the Catholic answer to the Protestant or Muslim objection that every sacred image is idolatrous. If the object is adored, there is idolatry. If the person depicted is honoured through the image, one stands within the logic of Nicaea II.^[26]

Convocation under Irene

After the death of Leo IV in 780, the empress Irene ruled as regent for her son Constantine VI. She gradually favoured the restoration of images, supported Patriarch Tarasius and sought communion with Rome. A first conciliar attempt at Constantinople in 786 was broken up by iconoclast soldiers; the assembly was transferred to Nicaea in 787.^[27]

Nicaea II met from 24 September to 23 October 787. The legates of Pope Adrian I sat there, with Tarasius of Constantinople and Eastern representatives. The council examined the bishops compromised with iconoclasm, reread the biblical and patristic testimonies, refuted Hieria, then promulgated its definition at the seventh session.^[28][29]

The dogmatic definition

The council ordered that images of Christ, of the Mother of God, of the angels and of the saints be placed in churches, on sacred vessels, in houses and along roads. It authorized lamps, incense, greetings and respectful prostration, but explicitly excluded the adoration befitting the divine nature alone.^[30]

This definition gives a stable rule:

1. Christian images are legitimate.
2. They must depict Christ, Mary, the angels or the saints.
3. The honour given to the image goes to the person depicted.
4. Adoration never belongs to the image.
5. The doctrine rests on the Incarnation of the Word.

The Catechism of the Catholic Church takes up this logic almost word for word: the Christian veneration of images is not contrary to the first commandment, for it does not stop at the image as an object; it goes to the model depicted.^[31]

The twenty-two canons

Nicaea II was not limited to the question of icons. It promulgated 22 canons on ecclesiastical discipline: study of the Scriptures by bishops, simony, Church goods, monastic life, regularity of appointments, religious houses and relations between clerics, monks and laypeople.^[32]

This detail matters. After decades of crisis, restoring images was not enough; an ecclesial order had to be restored. Iconoclasm had divided bishops, subjected clerics to political power, wounded monasteries and produced compromises. Conciliar discipline therefore served the same end as the dogmatic definition: giving the Church back its visible coherence.

A fragile reception

Nicaea II is dogmatic, but its political reception remained fragile. In the Byzantine world, conciliar doctrine did not wipe out at a stroke the iconoclast networks of the army, the court and certain episcopal circles. The restoration of 787 also depended on Irene's position; when the political context changed, iconoclasm could return.^[33]

Western reception met a difficulty of its own. In the Carolingian world, imperfect Latin translations of the acts of Nicaea II gave the impression that the council taught the adoration of images. The Libri Carolini, composed in Charlemagne's circle, therefore criticized Nicaea II while rejecting strict iconoclasm.^[34]

The second iconoclast crisis

In 815, the emperor Leo V the Armenian relaunched iconoclasm. The crisis continued under Michael II and Theophilus. As in the 8th century, the quarrel combined imperial politics, ecclesiastical discipline and the doctrine of images. The defenders of the icons now relied on Nicaea II as the dogmatic norm.^[35]

The definitive restoration took place in 843, under Empress Theodora and Patriarch Methodius. The event is commemorated in the Byzantine tradition as the Triumph of Orthodoxy, celebrated on the first Sunday of Great Lent. The name shows the doctrinal weight given to the question: restoring the icons means confessing the Incarnation correctly.

A Catholic doctrine of sacred art

The Quarrel over Images still grounds the Catholic and Orthodox doctrine of sacred art. Crucifix, icon, Marian statue, stained glass, mosaic or image of a saint are not neutral decorations; they teach, recall, direct prayer and make visible the memory of the Gospel.

The Council of Trent took up this tradition against the criticisms of the Reformation. It asked that images of Christ, of the Virgin and of the saints be kept, above all in churches, and that honour be paid to them, not because a divinity would dwell in the object, but because the honour is referred to the persons depicted.^[41]

"The images of Christ, of the Virgin, and of the saints are to be kept, especially in churches." — Council of Trent, Session XXV^[42]

An answer to the objection: do Catholics worship statues?

The Catholic answer holds in a simple distinction: a statue is never adored. God is adored. The saints are venerated. An image is honoured because it points to its prototype. If a Catholic attributed an autonomous divine power to a statue, he would fall into idolatry. But that is not the doctrine of the Church.

The Catechism puts it plainly: the Christian veneration of images is not contrary to the commandment proscribing idols. The movement does not stop at the image; it aims at the person depicted. That is why the Church can condemn idolatry and defend images in the same doctrinal gesture.^[43]

A lesson on the Incarnation

The Quarrel over Images recalls that Christianity is not a disembodied spirituality. God did not merely give ideas; he took flesh, face, gestures, voice, tears, blood, tomb. The Christian image does not replace the Gospel or the sacraments; it bears witness that salvation entered the visible world.

That is why the question remains timely. In a culture saturated with images, the Church does not defend just any image. It defends the sacred image when it leads to the true prototype, when it respects the faith, when it educates the gaze and when it clearly distinguishes veneration from adoration. The Quarrel over Images is therefore not only a Byzantine page of history: it fixes a Christian grammar of the visible.

• Council of Nicaea II (787)
• The communion of saints and intercession
• Soli Deo Gloria
• Is it possible that God became incarnate?
• Answers to Protestantism